Patent GB-190519121-A (GB)
Title: An Improved Machine for Packing Tea, Cocoa or other Goods.
Inventor: LOVELL EDWARD COLSTON
Filed: 1905-09-21
Granted: 1906-05-10
Abstract: 19,121. Lovell, E. C. Sept. 21. Packeting and falling tea, cocoa, &c.-In a machine for packeting and filling tea, cocoa, &c. into square bags, each bag is thrust into one of a number of open-ended pockets, mounted on an intermittently-rotating horizontal frame. As each bag arrives at the filling position, the tea &c: is fed into it by a shoot leading from a weighing- machine,. the bag being jigged during this operation by means of a vibrating plate upon which it stands. At the next station, the tea is. rammed and the two opposite sides of the top of the bag are turned in by horizontally-moving folders. At the next position of rest, the upstanding flaps are turned in by pivoted folders operated, by a verti, cally-moving plunger which presses together the folds. The finished packet is lifted out of its pocket by a vertically moving plunger, and is forced into a discharge shoot by a horizontallymoving plunger. Each bag, as it is completed in a bag-making machine, is thrust, with its closed end downwards, into a hollow carrying-frame 21, Figs. 1 and 2, which is mounted in such a manner that, as the arm 23 swings inwards, the bag is brought vertically over one of the. open-ended square pockets 5 mounted on the carrier 4. This carrier is mounted on the vertical shaft 3 carrying the worm-wheel 15 driven by the worm 14, which is intermittently rotated by the ratchet gearing 12, the pawl of which is carried by the toothed wheel 8, driven from the cam-operated toothed rack 6. The bag is transferred from the frame 21 to the pocket 5 by means of the reciprocating weight 40. suspended from the chain 41, the other end of which is secured to, a cam-operated lever 45. The carrier 4 is then rotated to bring the bag .beneath the filling-shoot 49 secured to the reciprocating rod 51, which is lowered until the end of the shoot 49 lies within the mouth of the bag. During the filling operation, the contents of the bag are jigged by means of the vibrating plate 59, Fig. 25,.. which passes through a hole in the table 2.. The plate 59 is carried by the sliding rod 65, which is repeatedly struck by the spring - pressed tilt bammer 64. When the bag reaches the next station, the contents are rammed by the plunger 67, Fig. 3, carried by the rod 68, and the two opposite sides of the top of the bag are then turned in by folders 93, which have. inclined sides 94 and are pivoted at 97 to blocks 96, fixed to horizontally-reciprocating rods 76, 77, Figs. 1 and 3. The right-hand folder 93 operates.before the left-Band folder, and carries a pasting-pad 100 receiving, paste from the roller 73, which is carried by the plunger 67 and contacts with the ratchet-driven pasting-roller 78. As the rods 76, 77 move to the left, the right-hand folder 93 turns in the upstanding side of the top of the bag. As the end of the stroke is reached, the folder strikes the fixed roller 103, and is thus turned about the centre 97 against the action of the spring 98. At the same time, the pad 100 applies gum. to the opposite upstanding side of the bag, which is turned in by the left-hand folder 93 as the rods 76, 77 move to the right. While these folding operations are taking place, the lateral upstanding sides of the bag are supported by inclined plates 113, Figs. 3 and 9, carried by uprights 114 mounted on an horizontally-reciprocating carriage 115. The carrier 4 is then rotated until the filled bag is brought beneath the reciprocating rod 129, Figs. 1 and 12, to which are fixed the plunger 128 and fork 130. As. the rod, 129 descends, the fork 130 turns the spring-governed folders 119<1> about the centres 120, thus turning in the remaining upstanding edges of the bag. The parts are so arranged that the, folders 119<1> first turn completely inwards, as indicated by the dotted lines in Fig. 11, and then assume a vertical position to allow free movement of the plunger 128 which presses down the final folds. The further movement of the carrier 4 brings the finished packet over the reciprocating plate 140, Fig. 1, which raises the packet out of the pocket 5 and enables the horizontallymoving plunger 142 to force the packet into the discharge' shoot 141. To allow bags of slightly different heights to be closed in the machine, a circular opening 148, Figs. 20 and 21, is made in the table 2,_.such opening extending round the table a distance equal to one-fourth of the circumference of the carrier 4. Beneath the opening 148 is a plate 147, the height of which may be adjusted by means of set-screws 156. The filled bags are pushed down upon the plate 147 by the plunger 67, Fig. 3, and, upon reaching the end of the. opening 148, the bags are again raised to the level of the upper surface of the table' 2 by means of a vertically-moving plate 158, Fig. 21. In a modification, the weight 40, Fig. 1, is replaced by a vertically moving rod which is reciprocated by means of a rack-and-pinion arrangement driven from a cam placed on the main shaft of the machine. The final folds of the bags may be secured by means of a gummed label placed round the bags by hand. It is stated in the Provisional Specification that, after the first and second folds have been made in the top of the bag, the carrier 4 may move. the bag to an intermediate station at which gum for sealing the final folds may be applied before the bag arrives at the station where the final folds are made., This, gumming-apparatus consists of a pair of gummers carried by a vertically-reciprocating rod.